Buscar
Mostrando ítems 11-20 de 821
An investigation of the trophic role of three pelagic fishes of the Western coast of the Gulf of Mexico, using ECOPATH model
(Scientia Marina, 1995)
The spanish and king mackerels (Scomberomous maculates and S. cavalla) and the blue runner (Caranx fusus) are important pelagic fish resources along the coasts of the Gulf of Mexico. Interdependences between them have been ...
Assessing the diet and trophic niche breadth of an omnivorous fish (Glanidium ribeiroi) in subtropical lotic environments: Intraspecific and ontogenic responses to spatial variations
(2019-01-01)
The diet of Glanidium ribeiroi was investigated in lotic stretches downstream from a cascade of reservoirs to determine how it responds to intraspecific and environmental variations. Monthly sampling was performed from ...
Qualitative effects of inducible defenses in trophic chains
(2007)
By means of qualitative techniques we analyze the consequences of inducible defenses of species embedded in trophic chains on the community stability and responses of population equilibrium densities to press perturbations. ...
Temperature-dependent functional response of Euborellia annulipes (Dermaptera: Anisolabididae) preying on Plutella xylostella (Lepidoptera: Plutellidae) larvae
(Elsevier B.V., 2020-10-01)
Temperature mediates trophic interactions, including relationships between insect pests and predators, and functional response studies are often used to determine the suitability of predators as biocontrol agents. We ...
Time is of the essence: Direct and indirect effects of plant ontogenetic trajectories on higher trophic levels
(Ecological Society Of America, 2014-09)
Physiological and morphological constraints during plant ontogeny affect the expression of numerous plant traits relevant to higher trophic levels, such as nutritional content and physical and chemical defenses. Yet we ...
Dietary changes and histophysiological responses of a wild fish (Geophagus cf. proximus) under the influence of tilapia cage farm
(2018-08-01)
The influence of cage fish farm on the trophic, histopathological and metabolic aspects of a wild fish species (Geophagus cf. proximus) was evaluated considering diet, liver histopathology and the concentration of total ...
δ13C and δ15N in dominant demersal fish species in the Southern Gulf of Mexico
(Journal of Fisheries and Aquatic Sciences, 2012)
Stable carbon and nitrogen isotope ratios of demersal fish species were studied in two areas of the continental shelf in the Gulf of Mexico in the summer of 2004. Samples were obtained from the shrimp bycatch while boarding ...